SECONDARY AIR/FLUID HEAT EXCHANGER, ITS MANUFACTURING METHOD AND BYPASS GAS TURBINE ENGINE EQUIPPED WITH SUCH HEAT EXCHANGER Russian patent published in 2023 - IPC F02C7/14 F02K3/115 F01D9/04 

FIELD: gas turbine engines.

SUBSTANCE: secondary air/fluid heat exchanger (2) for a bypass gas turbine engine. According to the invention, this heat exchanger (2) comprises annular outer shell (3) with two walls, inner (32) and outer (31), annular inner shell (4) concentric with outer shell (3), a row of outer guide vanes (OGV) (5), which connect the specified outer shell (3) with the specified inner shell (4), and circuit (6) for circulation of the specified fluid, while both shells limit the flow path of air flow of the second circuit, and the specified circuit (6) for circulation of the fluid is made with the thickness of the said outer shell (3) and the thickness of at least one of the said outer guide vanes (OGV) (5), this circulation circuit (6) extending at its respective two ends into inlet (34) and outlet (35) made in the specified outer wall (31) of the outer shell, and both shells (3, 4), OGV (5), and circuit (6) for circulation of the specified fluid are single-piece.

EFFECT: heat exchanger can be installed instead of a part of the outer casing; ability to increase volume and weight of the heat exchanger without disturbing the passage of the secondary air flow; simplified manufacture and reduced weight.

11 cl, 10 dwg